# [Tutor] Question on rounding

**Brad Chandler
**
mbc2@netdoor.com

*Tue, 9 Jan 2001 17:06:12 -0600*

I know this must have been discussed before, but I'm having a problem with
rounding. My hand calculator gives me the following: 25350 * .0055 =
139.425
But Python gives me 139.42499999999998. Now what I want is to round that up
to 139.43, so I've been using round(x,2). But my numbers have been slightly
off in python and I've just now discovered why. I think I can just use
round(x,3) and then round(x,2) to get the desired result, but that just
seems messy and I'm wondering if there is a better, more correct way of
doing it. Below is an example of my interpreter session.
>>>* x=25350.00*.0055
*>>>* x
*139.42499999999998
>>>* round(x,2)
*139.41999999999999
>>>* y = round(x,3)
*>>>* y
*139.42500000000001
>>>* round(y,2)
*139.43000000000001